The Hain Celestial Group, Inc., et al. v. Sarah Palmquist, individually and as next friend of E. P., a minor, et al.

103 F. 4th 294 (5th Cir. 2024) (2026) · Supreme Court of the United States · February 24, 2026 · No. No. 24-724

Summary

The Supreme Court held that a district court's erroneous dismissal of a nondiverse defendant did not cure the lack of complete diversity existing when the case was removed from state court. Because the jurisdictional defect lingered through judgment, the Fifth Circuit properly vacated the federal judgment and remanded the case. The Court also held that Federal Rule of Civil Procedure 21 could not be used, over the plaintiffs' objections, to dismiss the properly joined nondiverse defendant and preserve federal jurisdiction.

Court
Supreme Court of the United States
Writing for the Court
Justice Sonia Sotomayor; Justice Clarence Thomas; Justice John G. Roberts, Jr.; Justice Samuel A. Alito, Jr.; Justice Elena Kagan; Justice Neil M. Gorsuch; Justice Brett M. Kavanaugh; Justice Amy Coney Barrett; Justice Ketanji Brown Jackson
Jurisdiction
Supreme Court of the United States
Decision date
February 24, 2026
Docket number
No. 24-724
Procedural posture
Hain removed a Texas state-court diversity action to federal court, asserting that Whole Foods had been improperly joined and should be dismissed. The District Court dismissed Whole Foods, denied remand, and entered judgment as a matter of law for Hain after trial. The Fifth Circuit reversed the improper-joinder ruling, vacated the judgment for lack of diversity jurisdiction, and remanded the case to state court. The Supreme Court granted certiorari to determine whether the erroneous pre-judgment dismissal cured the jurisdictional defect.
Standard of review
The Supreme Court reviewed the legal question of whether the District Court had jurisdiction and whether an erroneous interlocutory dismissal of a nondiverse defendant cured the jurisdictional defect. Jurisdictional issues were reviewed de novo.
Precedential value
Published, precedential opinion of the Supreme Court of the United States; majority opinion joined by all participating Justices, with a separate concurrence by Justice Thomas.
Parties
The Hain Celestial Group, Inc., Whole Foods Market, Inc. v. Sarah Palmquist, Grant Palmquist, E. P., a minor
Disposition
affirmed_and_remanded

Topics

subject matter jurisdictionappellate jurisdictionappellate procedurecivil procedurefederalism

Practice areas

Civil procedureFederal jurisdictionAppellate procedureRemoval and remandProduct liability

Questions Presented

  1. Whether an erroneous interlocutory dismissal of a nondiverse defendant as improperly joined before final judgment cures the lack of complete diversity that existed when the case was removed.
  2. Whether the District Court's merits judgment could stand despite the uncured jurisdictional defect.
  3. Whether Federal Rule of Civil Procedure 21 permitted dismissal of Whole Foods over the plaintiffs' objections in order to preserve federal jurisdiction.

Holdings

  1. An erroneous interlocutory dismissal of a nondiverse defendant does not cure the lack of complete diversity that existed when the case was removed. Because the dismissal was reversible on appeal and the defendant was restored to the case, the jurisdictional defect lingered through judgment.
  2. Rule 21 does not permit a court or a defendant to dismiss a properly joined nondiverse defendant over the plaintiffs' consistent objections in order to preserve jurisdiction over an incorrectly removed action.

Key quotations

A district court’s judgment can stand, however, if the district court “cured” the jurisdictional defect before entering final judgment, such as by properly dismissing a nondiverse party from the case. (607 U.S. ___, 1)
This Court has never held that a district court can create jurisdiction through its own mistakes. (607 U.S. ___, 8)
As to the jurisdictional requirement itself, Caterpillar held that an uncured jurisdictional defect means that “the judgment must be vacated,” (607 U.S. ___, 9)
The decision to structure their case in this way was the Palmquists’ to make; Rule 21 does not permit a court or a defendant to override their choice in these circumstances. (607 U.S. ___, 10)

Factual background

The Palmquists fed their child E. P. baby food manufactured by Hain and purchased from Whole Foods. At age two and one-half, E. P. developed serious physical and mental conditions, and doctors attributed them in part to heavy-metal poisoning. After a 2021 congressional staff report identified elevated toxic metals in certain baby foods, including Hain's, the Palmquists sued Hain and Whole Foods in Texas state court. Whole Foods and the Palmquists were Texas citizens, defeating complete diversity at removal.

Procedural history

The Palmquists sued Hain and Whole Foods in Texas state court on state-law product-liability, negligence, and warranty theories. Hain removed on diversity grounds even though Whole Foods and the Palmquists were Texas citizens, arguing improper joinder. The District Court accepted that argument, dismissed Whole Foods, denied remand, and later entered judgment as a matter of law for Hain. The Fifth Circuit held that Whole Foods was properly joined, vacated the judgment, and remanded to state court. The Supreme Court affirmed the Fifth Circuit and remanded for further proceedings.

Remand instructions

The case is remanded for further proceedings consistent with the opinion; the District Court's merits judgment is vacated and the action must proceed in state court.

Court Document

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